private void tbNamaPasien_Leave(object sender, EventArgs e)
 {
     if (tbNamaPasien.Text != "" && SqliteDataAccess.CheckIfPasienExist(tbNamaPasien.Text))
     {
         MessageBox.Show("Nama Pasien sudah terdaftar", "Error");
         tbNamaPasien.Text = "";
     }
 }
 private void tbNoRM_Leave(object sender, EventArgs e)
 {
     if (tbNoRM.Text != "" && SqliteDataAccess.CheckIfPasienExist(Convert.ToInt32(tbNoRM.Text)))
     {
         MessageBox.Show("No. RM sudah terdaftar", "Error");
         tbNoRM.Text = "";
     }
 }